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@article{MZ_1977__153_172495, author = {Wolfgang Walter and Ray. Redheffer}, title = {Counterexamples for {Parabolic} {Differential} {Equations.}}, journal = {Mathematische Zeitschrift}, pages = {229--236}, publisher = {mathdoc}, volume = {153}, year = {1977}, zbl = {0331.35033}, url = {http://geodesic.mathdoc.fr/item/MZ_1977__153_172495/} }
Wolfgang Walter; Ray. Redheffer. Counterexamples for Parabolic Differential Equations.. Mathematische Zeitschrift, Tome 153 (1977), pp. 229-236. http://geodesic.mathdoc.fr/item/MZ_1977__153_172495/